Run both drives off the same raid controller, install Windows onto the mechanical HDD. Once installed cache from there via Intel software. There are plenty of SRT guides around if you can't follow the manual for setting everything up.
Be sure to keep the receipt for that ocz ssd, high failure rate.
As for your front panel, double check all the connections and make sure all the drivers that come with your board are installed.
IMHO is best to do a bios update regardless of issues.
Screw all that... I made some terribly wrong... I bricked my wd 3tb hd and now it's shows up as 700gm hard drive on the disk management...Now i'm running my windows from my ssd but even then if i try to disable or remove the hd from my system the windows wont boot up.
Please tell me a way to write both hd and ssd at 0 (or else wipe all data from those 2 drives to be like new agian)
you can even just setup caching via AI suite, OS has to be installed on the mechanical drive though as i said previously.
as for you disk management - 700gb scenario.... go to computer>right click, manage>disk management>see what is showing for that hdd in there. delete volume, create new (so you can use the full 3tb)
take your time dude with it all, perhaps read up on things a little more.